Semester Exam Review

Elements that are highly conductive are classified as metals. Elements that are generally poor conductors and not malleable are classified as nonmetals. Elements that have properties of both metals and nonmetals are classified as metalloids. Which terms, in order of appearance, best complete the sentence?

• metals, metalloids, nonmetals

• metals, nonmetals, metalloids

• metalloids, nonmetals, metals

• metalloids, metalloids, nonmetals

A chemist studies the elements in the image. The chemist makes the following observations: Element X has luster and is malleable. Element Y has luster but is not malleable. What is the most likely classification of Element X and Element Y?

• Element X and Element Y are both metals.

• Element X and Element Y are both metalloids.

• Element X is a metal and Element Y is a metalloid.

• Element X is a metalloid and Element Y is a metal.

All the known elements are listed in the periodic table. Based on the characteristics of an element, the chemist makes the following observations of the element: - Shiny - Malleable - High electrical conductivity - High thermal conductivity Which type of element could the chemist be studying?

• The element could be A because A is a metal.

• The element could be B because B is a metalloid.

• The element could be C because C is a nonmetal.

• The element could be D because D is a nonmetal.

A chemist studying the element sulfur (S) hypothesizes the properties of sulfur in a periodic table. Which of the following physical properties are consistent with the characteristics of sulfur based on its location in the periodic table? Select all that are true.

• Sulfur is a poor conductor of electricity.

• Sulfur is a bright conductor of electricity.

• Sulfur does not have luster.

• Sulfur is a nonmetal.

• Sulfur is a metal.

List three kinds of elements and describe the general size each type is found in the periodic table. Then compare the electrical conductivity of the three kinds of elements.

Tags

NGSS.MS-PS2-3

Pick the term that best completes the sentence: ______ is energy of motion, while ______ is energy of position or configuration of an object.

• potential energy

• Energy

• Energy

• Kinetic energy

• Kinetic energy

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

NGSS.MS-PS3-2

Which option accurately completes the following statement? The gravitational potential energy of an object above the ground increases with the ______ of the object and the ______ of the object relative to Earth.

• height

• gravity

• gravity

• mass

• mass

Which of the following is an example of gravitational potential energy being stored as height increases?

• A baseball player catching a ball

• A soccer player dribbling a soccer ball

• A gymnast jumping on a trampoline

• A skydiver jumping out of a plane

Use the figure to complete this statement. The gravitational potential energy of the roller coaster car increases its greatest value at ______ and is the smallest at ______.

• point A

• point B

• point C

• point A

• point C

Tags

NGSS.MS-PS3-2

In the Northern Hemisphere, there is only one special day after June 20, June 21, or June 22 each year. This day is referred to as the

• summer solstice

• spring equinox

• autumnal equinox

• winter solstice

Tags

NGSS.MS-ESS1-1